1. Bluetooth version: Bluetooth 5.0
2. Support protocol: HSP/HFP/A2DP/AVRCP
3. Transmission distance: 10 meters
4. Transmission frequency: 2.4GHz band
5. Audio parameters: frequency response range 20HZ-20KHZ
6. Sensitivity: 103+3DB At1000Hz At0.126V
7. Waterproof rating: IPX5
8. Charging compartment: 3.7V/2600mA, fully charged for about 2 hours, input 5V/1A, output 5V/1A
9. Battery capacity: polymer lithium battery 3.7A/40 mA, fully charged for about 1-1.5 hours
10. Battery life: about 3.5 hours of talk time, about 4.5 hours of music time, about 80 hours of standby time, and about 0.5 hours of charging time
11. Size: earphone: 20x23x20 mm, charging compartment: 81x52x33 mm
12. Weight: earphone about 4.5g/piece, charging compartment about 92g
13. Features: LED dual power display/large capacity charging compartment/72 hours long battery life/touch design/magnetic induction/voice control